<div dir="ltr"><div><div>Dear all,<br></div>I'm trying to do a HSE scf calculation for
graphene nanoribbon with PWSCF v6.1. I can succeed with 64 K points
along the periodic direction. But when I increase the K points to 96,
the job failed with an error as below,<br>'forrtl: severe (174): SIGSEGV, segmentation fault occurred<br>Image PC Routine Line Source<br>pw.x 0000000000DA3601 Unknown Unknown Unknown<br>.........'<br></div> And I am sure that the memory is enough. My input is as below,<br> &control<br><div> calculation = 'scf'<br>.......<br> /<br> &system<br> ibrav = 0<br> nat = 14,<br> ntyp = 3,<br> occupations = 'smearing'<br> smearing = 'cold'<br> degauss = 0.002<br> ecutwfc = 30.0<br> ecutrho = 240.0<br> nbnd = 40<br> nspin = 2<br> starting_magnetization (1) = 0.7,<br> starting_magnetization (2) = -0.7<br> input_dft='hse'<br> nqx1 = 1<br> nqx2 = 6<br> nqx3 = 1<br>/<br> &electrons<br> mixing_mode = "local-TF"<br> mixing_beta = 0.3<br> / <br>ATOMIC_SPECIES<br>C1 12.0107 C.pbe-van_ak.UPF<br>C2 12.0107 C.pbe-van_ak.UPF<br>H 1.00794 H.pbe-van_ak.UPF <br>ATOMIC_POSITIONS angstrom<br>C1 16.417155648 0.614975181 5.000000000<br>.......<br>K_POINTS automatic<br>1 96 1 0 0 0<br>CELL_PARAMETERS angstrom<br>25 0 0<br>0 2.459333174 0<br>0 0 15<br></div><div>I appreciate any help!<br></div><div>Best regards,<br></div><div>Hongsheng Liu<br></div>Department of Material Science<br>University of Milano-Bicocca</div>